* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#box {
  width: 60%;
  margin: 50px auto;
}

#post {
  margin: 50px 0;
  border: 1px solid #000;
}
#post p{
    margin-top: 20px;
    line-height: 24px;
    padding: 10px;
}
#comments-title{
    font-size: 30px;
    color:blue;
}
.comment-title{
    font-size: 18px;
}
.comment-content{
    font-size: 16px;
    line-height: 24px;;
}
#comments a{
    float: right;
}
#new-comment{
    display: block;
    width: 100%;
}
#comment-btn{
    width: 60px;
    height: 40px;
    font-size: 24px;
}